TW202120008A - Non-contact infrared thermometer - Google Patents

Abstract

The present invention provides a non-contact infrared thermometer for measuring the temperature of a target area of an object to be measured. The non-contact infrared thermometer comprises an infrared sensor, time-of-flight sensor, a microprocessor and storage. The TOF sensor is configured for measuring an actual temperature measurement distance from the target area. The microprocessor is electrically connected to the infrared sensor and the time-of-flight sensor. The storage is electrically connected to the microprocessor and configured to store a predetermined distance range for temperature measurement. If the actual temperature measurement distance falls within the predetermined distance range for temperature, the infrared sensor measures the temperature of the target area of the object to be measured.

Description

Non-contact infrared thermometer

The invention relates to a non-contact infrared thermometer, in particular to a non-contact infrared thermometer that uses a time-of-flight sensor to obtain an appropriate actual temperature measurement distance before measuring the temperature.

Non-contact infrared thermometers are widely used to measure human body temperature. The principle is to receive the infrared rays emitted by the skin on the forehead or temples of the human body, and then convert it into the core body temperature of the human body through environmental temperature compensation. In this way, because the thermometer does not need to be in direct contact with the patient, the purpose of safe, hygienic, and comfortable temperature measurement can be achieved. Especially for patients who are resting, children who are easily uncomfortable, or patients based on hygiene, non-contact infrared thermometers can have the advantage of extremely high convenience in operation.

In order to allow the user to more accurately measure the body temperature at the appropriate temperature measurement distance, the conventional non-contact infrared thermometer is equipped with an infrared distance sensor, which uses infrared rays to radiate to the forehead of the object to be measured, and then receives and reflects back. After converting the light energy of the infrared ray, the actual temperature measurement distance is measured. Finally, a reminder mechanism is used to prompt the user to position the non-contact infrared sensor at an appropriate/preset temperature measurement distance to operate the non-contact infrared thermometer, such as a forehead thermometer, so as to quickly measure accurate body temperature (Human core temperature).

However, in the above-mentioned prior art, as disclosed in US Pat. No. 7,810,992, an infrared distance sensor is used to determine the temperature measurement distance. This kind of technology has the disadvantage that it cannot be applied to all kinds of people. For example, when measuring non-black people, the infrared distance sensor must be adjusted due to the high amount of reflected infrared light. If an infrared distance sensor suitable for measuring non-black skin is used to measure black people, since the amount of reflected infrared light is relatively low, significant distance measurement errors will occur, and the actual temperature measurement distance cannot be measured. As a result, the infrared sensor of the non-contact infrared thermometer does not measure within the correct distance range, resulting in errors in the measured body temperature.

Therefore, how to accurately measure the actual temperature measurement distance so that people of all skin colors can use the same non-contact infrared thermometer without additional adjustment of parameters or switching measurement modes has become the technical field of non-contact infrared temperature measurement. One of the important issues to be solved.

The technical problem to be solved by the present invention is to provide a non-contact infrared thermometer for measuring the temperature of a target area of an object to be measured in view of the shortcomings of the prior art. The non-contact infrared thermometer includes an infrared sensor; a time-of-flight sensor that measures an actual temperature measurement distance to the target area; and a microprocessor that is electrically connected to the An infrared sensor and the time-of-flight sensor; and a memory, which is electrically connected to the microprocessor, for storing a predetermined temperature measurement distance range; wherein, when the actual temperature measurement distance falls within the In the predetermined temperature measurement distance range, the infrared sensor measures the temperature of the target area of the object to be measured. Alternatively, when the actual temperature measurement distance falls within the predetermined temperature measurement distance range, the infrared sensor automatically measures the temperature of the target area of the object to be measured.

The invention provides a non-contact infrared thermometer for measuring the temperature of a target area of an object to be measured. The non-contact infrared thermometer includes: an infrared sensor; a time-of-flight sensor that measures an actual temperature measurement distance from the target area; and a microprocessor that is electrically connected to the An infrared sensor and the time-of-flight sensor; and a memory, which is electrically connected to the microprocessor, for storing a predetermined temperature measurement distance; wherein, when the actual temperature measurement distance is greater than or equal to During the predetermined temperature measurement distance, the infrared sensor measures the temperature of the target area of the object to be measured. Alternatively, when the actual temperature measurement distance is greater than or equal to the predetermined temperature measurement distance, the infrared sensor automatically measures the temperature of the target area of the object to be measured.

The above non-contact infrared thermometer further includes: an alignment unit having a light-emitting element and an optical element; wherein, when the alignment unit irradiates an alignment mark on the target area, the infrared sensor The device measures the temperature of the target area of the object to be measured.

The aforementioned non-contact infrared thermometer further includes a positioning unit electrically connected to the microprocessor to determine that the time-of-flight sensor is facing the target area.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings about the present invention. However, the provided drawings are only for reference and description, and are not used to limit the present invention.

The following are specific examples to illustrate the implementation of the "infrared thermometer" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

It should be understood that although terms such as “first”, “second”, and “third” may be used in this document to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another, or one signal from another signal. In addition, the term "or" used in this document may include any one or a combination of more of the associated listed items depending on the actual situation.

[First Embodiment]

1 to 3, the first embodiment of the present invention provides a non-contact infrared thermometer 1, which is only illustrated as a gun-type forehead thermometer, but the present invention does not limit the shape of the forehead thermometer. The measuring device 12 measures the amount of infrared radiation emitted by the target area F (in this embodiment, the center of the forehead or near the center of the eyebrows, but also the skin near the temples or on the arteries) of the object T to be measured to measure the surface temperature of the target area , And use the microprocessor 11 to execute the calculation formula or compensation factor stored in the memory 14 to convert the measured forehead temperature to the core temperature. The above-mentioned conversion method is the core temperature of the human body. The technology is the conventional technology of the forehead thermometer/gun , As disclosed in European Patent Publication No. EP1530034, I will not repeat it here.

As shown in Figure 1, the circuit block diagram of the non-contact infrared thermometer 1 can be seen to be at least composed of a microprocessor 11, an infrared sensor 12, a time-of-flight sensor 13, a storage 14, a reminder 22, and a display 17. . The microprocessor 11 can be electrically connected to the infrared sensor 12, the time-of-flight sensor 13, the storage 14, the reminder 22, and the display 17 respectively. The infrared sensor 12 is used to measure the infrared energy emitted by the target area F of the object T to be measured, such as the forehead. The storage 14 stores a predetermined temperature measurement distance range. In addition, through the algorithm stored in the storage 14, the microprocessor 11 first converts the aforementioned measured infrared energy into the skin temperature of the forehead surface, and then converts the forehead surface temperature into the core body temperature. In other embodiments, the non-contact infrared thermometer 1 may also include a wireless data transmission module, such as a Bluetooth or WiFi module, to upload user data and temperature data to a cloud database to provide subsequent health data processing.

As shown in FIG. 2, the non-contact infrared thermometer 1 in this embodiment includes a head 10 and a holding portion 20. The infrared sensor 12 for measuring the infrared radiation amount of the target area F of the object T to be measured is installed on the end surface 101 of the head 10 of the non-contact infrared thermometer 1. A time-of-flight sensor 13 is provided at the end surface 101 adjacent to the infrared sensor 12 at the same time, which is used to measure the actual temperature measurement distance from the target area F (for example, the forehead) of the object T to be measured. Since the actual temperature measurement distance is to make the infrared radiation measured by the infrared sensor 12 the most accurate conversion to the core body temperature of the object to be measured, the time-of-flight sensor 13 is preferably set to be the same as that of the infrared sensor. 12 is adjacent and coplanar (that is, the end surface 101), so that the actual temperature measurement distance measured by the time-of-flight sensor 13 is equal to the distance between the infrared sensor 12 and the target area F of the object T to be measured. In other embodiments, the bottom of the holding portion 20 may be provided with a counterweight portion, so that the non-contact infrared thermometer 1 maintains a balance and stands on a tabletop, which is convenient for the user to easily access.

The head 10 of the non-contact infrared thermometer 1 is provided with a power switch 15. When the user starts to operate the non-contact infrared thermometer 1, the power switch 15 can be pressed to enable the system circuit in the non-contact infrared thermometer 1 to be powered, and After the time-of-flight sensor 13 measures the actual temperature measurement distance from the target area of the object T to be measured and falls within the predetermined temperature measurement distance range, the user's hand can press the start switch 21 on the grip 20 to make The microprocessor 11 sends instructions to the infrared sensor 12 to sense the amount of infrared radiation emitted by the target area, so as to measure the core body temperature of the object T to be measured. In other embodiments, the user does not need to press the start switch 21 on the grip 20, and the microprocessor 11 can automatically send commands to the infrared sensor 12 to sense the infrared radiation of the target area F. Thus, the core body temperature of the subject T to be measured is measured. In this embodiment, the predetermined temperature measurement distance ranges from 9.5 to 10.5 cm, but the present invention is not limited to this.

As shown in FIG. 3, the other end surface of the head 10 of the non-contact infrared thermometer 1 away from the end surface is provided with a display 17 and a switch 16. The display 17 can display various information, such as measured distance, user information, height of the object to be measured, temperature unit, ambient temperature, local time, and/or fever warning (red backlight), but the present invention is not limited to this. To help users operate the non-contact infrared thermometer 1. For example, when the display 17 is fully lit, it can prompt the user that the power of the non-contact infrared thermometer 1 has been turned on. According to the actual temperature distance measured by the time-of-flight sensor 13, the display 17 displays the distance to prompt the user to adjust the non-contact infrared thermometer. The distance between the contact infrared thermometer 1 and the target area of the object to be measured. After the non-contact infrared thermometer 1 is determined to be located at the best actual temperature measurement distance DT, the display 17 prompts the user to press the start switch 21 to perform temperature measuring. In this embodiment, a reminder 22 is further provided to provide non-visual ear auditory or hand tactile feedback, such as sound or vibration prompts, to remind the user that the non-contact can be activated at the best actual temperature measurement distance DT Infrared thermometer 1 performs temperature measurement.

As shown in FIG. 3, a switch 16 is provided above the display 17. Only two mode switchs are illustrated here, which allow the user to manually switch the two types of the storage 14 of the non-contact infrared thermometer 1 by switching left and right. Algorithm. For example, when the user wants to measure the temperature of the human body, he can switch to the first algorithm so that the microprocessor 11 can access the first algorithm in the memory 14 to convert the human core body temperature from the measured infrared radiation. . For another example, when the user wants to measure the temperature of an item such as a milk bottle, he can switch to the second algorithm so that the microprocessor 11 can access the second algorithm in the memory 14 to convert from the measured infrared radiation. The temperature of the surface of the bottle (close to the milk temperature).

(式1) 其中，D_T 為實際溫度測量距離；t為時間差；C為光速。As shown in FIG. 4, the principle of the time-of-flight sensor 13 of the present invention is explained. The time-of-flight sensor 13 includes a radiation element 131, a sensing element 132 and a circuit board 133, wherein the radiation element 131 and the sensing element 132 are embedded in the circuit board 133. When the time-of-flight sensor 13 is in operation, the radiation element 131 emits the light beam P1 to the target area of the object T to be measured. After the photons of the light beam P1 hit the surface of the target area, the photon part of the reflected light beam P2 is received by the sensing element 132. The time-of-flight sensor 13 uses the time difference between the light beam P1 emitted by the radiation element 131 and the photon of the light beam P2 received by the sensor element 132 to convert the target area of the object T to be measured and the time-of-flight sensor with the known speed of light and the measured time difference. The distance between the detectors 13 can be roughly equivalent to the actual temperature measurement distance DT between the infrared sensor 12 and the target area F of the object T to be measured. The calculation formula of the time-of-flight sensor 13 is:

(Equation 1) Among them, D _T is the actual temperature measurement distance; t is the time difference; C is the speed of light.

[Second Embodiment]

Referring to Figures 5 to 7C, the second embodiment of the present invention provides a non-contact infrared thermometer 1. In addition to all the configurations in the first embodiment, the head 10 of the non-contact infrared thermometer 1 The end surface 101 is provided with an alignment unit 18. The alignment unit 18 has a light-emitting element and an optical element (not shown). The light-emitting element emits light and passes through the optical element to generate an alignment mark 30a to be imaged on the target area, as shown in FIG. 7a. In addition, as shown in FIG. 5, the alignment unit 18 is electrically connected to the microprocessor 11. When the time-of-flight sensor 13 of the non-contact infrared thermometer 1 measures the actual temperature measurement distance DT, the user can press for the first time With the activation switch 21 on the holding portion 20, the microprocessor 11 activates the alignment unit 18 to issue an alignment mark to help and prompt the user to align the non-contact infrared thermometer 1 on the target area F of the object T to be measured , In order to improve the accuracy of the temperature measurement distance DT measured by the time-of-flight sensor 13. More precisely, the alignment unit 18 is used to ensure that the end surface 1 of the non-contact infrared thermometer 1 and the surface of the target area to be temperature measured are directly aligned with each other, so that the time-of-flight sensor 13 can be at the correct angle Transmit/receive the beam correctly, so that the accurate actual temperature measurement distance DT can be calculated. In particular, the time-of-flight sensor 13 provided on the end face 101 measures the distance between the target area F for measuring the body temperature of the object T to be measured and the end face 101 of the non-contact infrared thermometer 1. This distance is also the infrared sensor The actual temperature of 12 measures the distance DT. In actual product design, the accuracy of the non-contact infrared thermometer 1 is limited by the specifications (effective measurement distance) of the infrared sensor 12, so the mastery of the measurement distance becomes very important.

As shown in FIGS. 7A and 7B, before the time-of-flight sensor 13 measures the temperature measurement distance DT, the alignment unit 18 images the target area F (for example, forehead) of the object T to be measured and marks the alignment mark 30a. In detail, if the user observes that the alignment mark 30a is a square as shown in FIG. 7B, it can be seen that the end surface 101 of the non-contact infrared thermometer 1 and the surface of the target area of the object T to be measured are directly opposite to each other. The measured actual temperature measurement distance DT is more accurate. In this way, the time-of-flight sensor 13 allows the user to grasp the best temperature measurement distance, and the user can press the start switch 21 on the grip 20 a second time to reliably receive the infrared radiation of the target area. , So as to convert the most accurate core body temperature.

Conversely, if the user observes that the alignment mark 30b is a rectangle as shown in FIG. 7C, it can be seen that the end surface 101 of the non-contact infrared thermometer 1 and the surface of the target area of the object T to be measured are not directly opposite to each other. The actual temperature measurement distance will be inaccurate. For example, in the example of FIG. 7C, it can be seen that the user holds the non-contact infrared thermometer 1 to the right as viewed from the object T, and must move the non-contact infrared thermometer 1 to the left of the object T to be adjusted. The relative position of the end surface 101 and the target area F causes the alignment mark 30b to return to the quasi mark 30a (square) as shown in FIGS. 7A and 7B, so that the next step can be performed to measure the best actual temperature measurement distance DT. . It is specifically explained here that as long as the alignment mark is not square, it means that the end surface 101 of the non-contact infrared thermometer 1 is not directly opposite to the surface of the target area F of the object T to be measured. As long as the adjustment returns to the square, it can continue. Operating temperature measurement.

[Third Embodiment]

Referring to FIG. 8, the third embodiment of the present invention provides a non-contact infrared thermometer 1. In addition to all the configurations in the above-mentioned first embodiment, a positioning unit is provided on the grip portion 20 of the non-contact infrared thermometer 1 twenty three. In this embodiment, the positioning unit 23 may be a gyroscope (Gyro Meter). In other embodiments, the positioning unit 23 may also be a gravity sensor (G-sensor) or an equivalent coordinate sensor. In this embodiment, the positioning unit 23 can be used to provide the coordinate change information of the end surface 101 of the non-contact infrared thermometer 1. The positioning unit 23 is electrically connected to the microprocessor 11 to provide the microprocessor 11 to analyze/process the non-contact infrared thermometer 1’s coordinates, speed, displacement, and angle related information, so that the microprocessor 11 can prompt The device 22 and/or the display 17 provide the user with sound, tactile or visual feedback or prompts to help the user locate the non-contact infrared thermometer 1. In other embodiments, when the coordinates provided by the positioning unit 23 remain unchanged for a period of time, the non-contact infrared thermometer 1 enters the standby mode or shuts down to save power consumption. In addition, the positioning unit can also replace the aforementioned power switch, that is, when the coordinates provided for a period of time suddenly change, the non-contact infrared thermometer 1 is turned on.

The positioning unit 23 of this embodiment can help the user not only position the end surface 101 of the non-contact infrared thermometer 1 to be directly opposite to the surface of the target area of the object 1 to be measured, but also position the non-contact infrared thermometer 1 according to the reference coordinates. (Or more specifically the end surface 101) the height/coordinate from the ground plane is approximately the same as the target area F of the object T to be measured. In this way, the user can be prompted to find the best actual temperature measurement distance DT to obtain the most accurate infrared radiation amount, thereby converting the most accurate core body temperature.

[Operation method of the second embodiment]

As shown in FIG. 9, it shows the operation step diagram of the non-contact infrared thermometer 1 of the second embodiment of the present invention. This embodiment only exemplifies the situation where the user measures the body temperature of the object to be measured, but the present invention does not take this as limit. In step S110, the user activates the non-contact infrared thermometer 1 by pressing the power switch 15. In step S120, the alignment unit 18 of the non-contact infrared thermometer 1 irradiates the target area F of the object T to be measured with an alignment mark (square). In step S130, the user visually judges whether the alignment mark is a square alignment mark 30a (as shown in FIG. 7B). If yes, go to step S131, start the time-of-flight sensor 13 to obtain the actual temperature measurement distance DT between the head 10 (or more specifically the end face 101) of the infrared thermometer and the target area F of the object T to be measured If not, for example, when the user observes that the alignment mark illuminated by the alignment unit 18 is a rectangular alignment mark 30b as shown in FIG. 7C, go to step S132, and provide visual or auditory sense through the display 17 or the prompter 22, The tactile feedback is provided to the user, prompting the user to move and adjust the relative position of the non-contact infrared thermometer 1 and the target area F of the object T to be measured, and then return to steps S120 and S130 to re-determine whether the alignment mark is a square square (As shown in Figure 7B align mark 30a).

In step S140 after step S131, based on the actual temperature measurement distance DT measured by the time-of-flight sensor 13, the microprocessor 11 determines whether the distance is within the preset distance range value stored in the memory 14. If yes, go to step S141. After receiving the visual, auditory, and tactile feedback provided by the microprocessor 11 through the display 17 or the reminder 22, the user activates the infrared sensor 12 to target the target area by pressing the activation switch 21. Perform temperature measurement; if not, go to step S142, through the display 17 or reminder 22 to provide visual, auditory, and tactile feedback to prompt the user of the non-contact infrared thermometer 1 to adjust the non-contact infrared thermometer 1 and the object to be measured The relative position of the target area F of T, and then return to steps S131 and S140 to re-determine whether the temperature measurement distance is within the preset distance range value. In other embodiments, steps S120, S130, S131, S132, S140, and S142 can be integrated and performed simultaneously, that is, it is determined whether the alignment and distance are correct at the same time, but the present invention is not limited to this.

In addition, in other embodiments, the non-contact infrared thermometer 1 may also include a clock and a timer. When the integration steps S131, S140, S141, and S142 are performed at the same time and the clock and timer operations are performed simultaneously, only the actual The multiple data automatically and continuously measured by the infrared sensor 12 within the time interval when the temperature measurement distance falls within the predetermined distance range value are averaged or the highest is taken, and then the subsequent step S150 (described later) is entered.

In step S150 after step S141, based on the temperature measurement data of the infrared sensor 12, the microprocessor 11 calculates the surface temperature from the amount of infrared radiation, and then compensates/converts to the core body temperature through the ambient temperature, and then the display 17 shows the measured core body temperature. In this way, the temperature measurement operation of the non-contact infrared thermometer is completed.

[Operation method of the third embodiment]

As shown in FIG. 10, it shows the operation step diagram of the non-contact infrared thermometer 1 of the third embodiment of the present invention. This embodiment only exemplifies the self-measurement situation of the object to be measured (that is, the user), but the present invention does not Limited by this. In step S210, the user activates the non-contact infrared thermometer 1 by pressing the power switch 15. In step S220, the positioning unit 23 of the non-contact infrared thermometer 1 is activated to determine that the time-of-flight sensor 13 is facing the target area. It is specifically stated here that the subject T to be tested must be standing or sitting for self-measurement. In step S230, the microprocessor 11 determines whether the time-of-flight sensor 13 is facing the target area according to the data measured by the positioning unit 23.

If yes, go to step S231, start the time-of-flight sensor 13 to obtain the actual temperature measurement distance DT between the head 10 (or more specifically the end face 101) of the infrared temperature meter and the target area of the object to be measured If not, go to step S232, provide visual, auditory, and tactile feedback through the display 17 or the reminder 22, and prompt the user of the non-contact infrared thermometer 1 to adjust the non-contact infrared thermometer according to the information provided by the positioning unit 23 The relative position of the infrared thermometer 1 and the target area of the object T to be measured, and then return to steps S220 and S230 to re-determine whether the time-of-flight sensor is facing the target area of the object to be measured.

In step S240 after step S231, based on the actual temperature measurement distance DT measured by the time-of-flight sensor 13, the microprocessor 11 determines whether the distance is stored in the memory 14 within a preset distance range value. If yes, go to step S241, after receiving the auditory or tactile feedback provided by the microprocessor 11 through the reminder 22, the user activates the infrared sensor 12 to measure the temperature of the target area by pressing the activation switch 21; if If not, go to step S242, the prompter 22 provides auditory or tactile feedback to prompt the user of the non-contact infrared thermometer 1 to adjust the relative position of the non-contact infrared thermometer 1 and the target area F of the object T to be measured, and Go back to steps S231 and S240 to re-determine whether the temperature measurement distance is within the preset distance range value. In other embodiments, steps S220, S230, S231, S232, S240, and S242 can be integrated and performed simultaneously, that is, it is determined whether the positioning and distance are correct at the same time, but the present invention is not limited to this.

In step S250 after step S241, based on the temperature measurement data of the infrared sensor 12, the microprocessor 11 calculates the surface temperature from the infrared radiation, and then compensates/converts to the core body temperature by the ambient temperature. The display 17 displays the measured core body temperature.

It is specifically explained here that in the steps S140 and S240 of the foregoing two operation methods, the microprocessor 11 determines whether the actual temperature measurement distance is stored in the memory 14 and can also be changed to determine whether the actual temperature measurement distance is within the predetermined temperature measurement distance range. Whether the actual temperature measurement distance is greater than or equal to the predetermined temperature measurement distance stored in the storage 14 depends on actual design requirements, but the present invention is not limited to this. In this embodiment, the predetermined temperature measurement distance is 10 cm, but the present invention is not limited to this, and the measurement distance can be adjusted according to actual design requirements.

[Beneficial effects of the embodiment]

One of the beneficial effects of the present invention is that the non-contact infrared thermometer provided by the present invention can make the non-contact infrared thermometer obtain accurate distance measurement through the technical solution of “setting a time-of-flight sensor” without The factors of the object to be measured with different skin colors affect the accuracy of the final temperature measurement.

Another beneficial effect of the present invention is that the non-contact infrared thermometer provided by the present invention can enable the non-contact infrared thermometer to sense the time of flight through the technical solution of “setting the alignment unit” or “setting the positioning unit”. Before measuring the distance, calibrate the relative position of the time-of-flight sensor and the target area to improve the accuracy of the time-of-flight sensor.

The content disclosed above is only the preferred and feasible embodiments of the present invention, and does not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the description and schematic content of the present invention are included in the application of the present invention. Within the scope of the patent.

1: Non-contact infrared thermometer 10: Head 101: End face 11: Microprocessor 12: Infrared sensor 13: Time of flight sensor 131: Transmitting element 132: Sensing element 133: Circuit board 14: Storage 15 : Power switch 16: Switch 17: Display 18: Alignment unit 20: Grip 21: Start switch 22: Prompter 23: Positioning unit 30a, 30b: Alignment mark D _T : Actual temperature measurement distance P1, P2: Photon path T: object to be measured F: target area S110~S150: steps S210~S250: steps

Fig. 1 is a circuit block diagram of a non-contact infrared thermometer according to a first embodiment of the present invention.

Fig. 2 is a perspective view of the non-contact infrared thermometer according to the first embodiment of the present invention.

3 is a perspective view of the non-contact infrared thermometer according to the first embodiment of the present invention from another angle of view.

4 is a schematic diagram of distance measurement of the time-of-flight sensor according to the first embodiment of the present invention.

Fig. 5 is a circuit block diagram of a non-contact infrared thermometer according to a second embodiment of the present invention.

Fig. 6 is a perspective view of a non-contact infrared thermometer according to a second embodiment of the present invention.

FIG. 7A is a schematic diagram of the operation of the non-contact infrared thermometer according to the second embodiment of the present invention.

FIG. 7B is a schematic diagram of a situation in which the non-contact infrared thermometer according to the second embodiment of the present invention irradiates an alignment mark on the object to be measured.

FIG. 7C is a schematic diagram of another situation in which the non-contact infrared thermometer of the second embodiment of the present invention irradiates the alignment mark on the object to be measured.

Fig. 8 is a circuit block diagram of a non-contact infrared thermometer according to a third embodiment of the present invention.

Fig. 9 is an operation flowchart of the non-contact infrared thermometer according to the second embodiment of the present invention.

Fig. 10 is an operation flowchart of the non-contact infrared thermometer according to the third embodiment of the present invention.

1: Non-contact infrared thermometer

11: Microprocessor

12: Infrared sensor

13: Time of flight sensor

14: Storage

17: display

22: Reminder

Claims (10)

A non-contact infrared thermometer is used to measure the temperature of a target area of an object to be measured. The non-contact infrared thermometer includes: An infrared sensor; A time-of-flight sensor, which measures an actual temperature measurement distance from the target area; A microprocessor electrically connected to the infrared sensor and the time-of-flight sensor respectively; and A memory, electrically connected to the microprocessor, for storing a predetermined temperature measurement distance range; Wherein, when the actual temperature measurement distance falls within the predetermined temperature measurement distance range, the infrared sensor measures the temperature of the target area of the object to be measured. The non-contact infrared thermometer according to claim 1, wherein, when the actual temperature measurement distance falls within the predetermined temperature measurement distance range, the infrared sensor automatically measures the The temperature of the target area. A non-contact infrared thermometer is used to measure the temperature of a target area of an object to be measured. The non-contact infrared thermometer includes: An infrared sensor; A time-of-flight sensor, which measures an actual temperature measurement distance from the target area; A microprocessor electrically connected to the infrared sensor and the time-of-flight sensor respectively; and A memory, electrically connected to the microprocessor, for storing a predetermined temperature measurement distance; Wherein, when the actual temperature measurement distance is greater than or equal to the predetermined temperature measurement distance, the infrared sensor measures the temperature of the target area of the object to be measured. The non-contact infrared thermometer according to claim 3, wherein, when the actual temperature measurement distance is greater than or equal to the predetermined temperature measurement distance, the infrared sensor automatically measures the The temperature of the target area. The non-contact infrared thermometer according to claim 1 or 3, wherein the non-contact infrared thermometer further comprises: An alignment unit having a light-emitting element and an optical element, the light-emitting element emits light and passes through the optical element to generate an alignment mark to be imaged on the target area; Wherein, when the alignment unit irradiates the alignment mark on the target area, the infrared sensor measures the temperature of the target area of the object to be measured. The non-contact infrared thermometer according to claim 5, wherein the non-contact infrared thermometer further comprises: A head, the end surface of which is provided with the infrared sensor, the time-of-flight sensor, and the alignment unit; and A holding part is connected to the head and is provided with the microprocessor and the storage. The non-contact infrared thermometer according to claim 1 or 3, wherein the non-contact infrared thermometer further comprises: A positioning unit is electrically connected to the microprocessor to determine that the time-of-flight sensor is facing the target area. The non-contact infrared thermometer according to claim 7, wherein the non-contact infrared thermometer further comprises: A head, the end surface of which is provided with the infrared sensor and the time-of-flight sensor; and A holding part which is connected to the head and is provided with the microprocessor, the storage and the positioning unit. The non-contact infrared thermometer according to claim 7, wherein the positioning unit is a gravity sensor. The non-contact infrared thermometer according to claim 1 or 3, wherein the actual temperature measurement distance is the flight time of light multiplied by the speed of light and then divided by 2.

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